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I guess, you already checked Wikipedia article on polymorphism. In computer science, polymorphism is a programming language feature that allows values of different data types to be handled using a uniform interface. According to that definition, no, C doesn't natively support polymorphism.
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BetaA real-life example of polymorphism is a person who at the same time can have different characteristics. A man at the same time is a father, a husband, and an employee. ... In C, programs can choose which part of the code to execute based on some condition.
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BetaI cited some examples of subtyping polymorphism in my opinion piece, ‘C versus C++: fight!’ This tutorial develops those examples into a full program, showing why such techniques are useful and how to implement them. The word polymorphism is from Ancient Greek, simply meaning “many shapes”.
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BetaC# Operator Overloading. Some operators in C# behave differently with different operands. For example, + operator is overloaded to perform numeric addition as well as string concatenation and Now let's see how we can achieve polymorphism using operator overloading.
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BetaInheritance and polymorphism are the most powerful features of Object Oriented Programming Languages. With inheritance and polymorphism, we can achieve code reuse. There are many tricky ways for implementing polymorphism in C. The aim of this article is to demonstrate a simple and easy technique of applying inheritance and polymorphism in C.
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BetaNote: An extended and updated version of this demonstration can be found at typeclass-interface-pattern.. This article describes an extensible and practical design pattern you can use to achieve functional polymorphism in pure, standard C99 (or above). You can view an implementation and usage of this pattern in c-iterators, where I implement lazy, type safe, rust-like iterators.
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BetaA program example is given below to illustrate this concept. The program has a base class and two derived classes. The base class and its derived classes have their member function and the names of their member functions is same. Example how to use inheritance in Polymorphism in C/C++ programming:
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BetaHow to Implement Polymorphism in C? In Polymorphism we declare an Interface and implement the details in entities of different types. In our example above, for example, we could have a draw function in the shape “class”. But the real code how to draw the shape depends on the class that implements this function – drawing a rectangle is not the same as drawing a circle.
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BetaObject-Oriented Programming in C, by Miro Samek, walks through using encapsulation, inheritance, and polymorphism in C. Companion code is also available. Object-oriented Techniques in C by Dmitry Frank provides an example implementation of polymorphism; Nathan Jones has a take on Simple Inheritance in his Comparison of OOP Techniques in C project.
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BetaPolymorphism uses those methods to perform different tasks. This allows us to perform a single action in different ways. For example, imagine a base class Animal with a method called makeSound(). Derived classes of Animals could be Pigs, Cats, Dogs, Birds, etc. Every animal can "make a sound", but each one sounds different: Pig: wee wee; Dog ...
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